spandit Posted May 30, 2014 Report Share Posted May 30, 2014 Semi auto .22's tend to be noisier than their bolt action counterparts & I was speculating on what the effect would be if the bolt was locked (like a normal bolt action) on sound & accuracy. I'd presume if the gun could take it then more power would be transferred to the bullet which could lead to a flatter trajectory. I know there might be some extraction issues but pull back actions are available (the old cadet SA80 rifle for example, L98A1?) Not sure how it would be achieved on my Anschutz 525 without some proper machining but I'm stuck away from home at the moment so my mind is free to wander Quote Link to comment Share on other sites More sharing options...
Dekers Posted May 30, 2014 Report Share Posted May 30, 2014 Unless you are a very clever man with metal and wood, or have extremely deep pockets I'd stick with just letting your mind wander. Quote Link to comment Share on other sites More sharing options...
kennym Posted May 30, 2014 Report Share Posted May 30, 2014 Unless you are a very clever man with metal and wood, or have extremely deep pockets I'd stick with just letting your mind wander. classic Quote Link to comment Share on other sites More sharing options...
spandit Posted May 30, 2014 Author Report Share Posted May 30, 2014 (edited) Thought that might be the case but would be nice to have selectable S/A - is there such a gun out there (I've only heard of guns that select between full and semi) Edited May 30, 2014 by spandit Quote Link to comment Share on other sites More sharing options...
spandit Posted May 30, 2014 Author Report Share Posted May 30, 2014 To answer my own question, there are kits available to lock the bolt on a 10/22 but how similar the mechanism is, I don't know. The 525 gets very mixed reviews, some love it, some hate it. Not having tried anything else, I can't really compare it but having a locked bolt would also lessen the crud that gets thrown into the action after each shot Quote Link to comment Share on other sites More sharing options...
joe soapy Posted May 30, 2014 Report Share Posted May 30, 2014 Thought that might be the case but would be nice to have selectable S/A - is there such a gun out there (I've only heard of guns that select between full and semi) Vore? semi could lock bolt Quote Link to comment Share on other sites More sharing options...
Steel100 Posted May 30, 2014 Report Share Posted May 30, 2014 There have been selective, bolt action and semi-auto rifles manufactured in the past. I believe that Anschutz made one some years ago and I seem to remember a French example too. Not aware of anyone still offering a version. Quote Link to comment Share on other sites More sharing options...
spandit Posted May 30, 2014 Author Report Share Posted May 30, 2014 Not an entirely ridiculous concept, then, even if converting would be prohibitively expensive/difficult Quote Link to comment Share on other sites More sharing options...
saddler Posted May 30, 2014 Report Share Posted May 30, 2014 I saw a South African .22 a while back that could do this...either operate as a semi or a manual bolt action... Also seen this system on the Voere The 10/22 kits are relatively simple and easy to fit. The way ahead would be to find a mate with a lathe/milling machine & see what you can come up with; all it'd need (on a VERY BASIC level) is a pin to lock the bolt in the firing position Quote Link to comment Share on other sites More sharing options...
NathanM Posted May 30, 2014 Report Share Posted May 30, 2014 Not sure if more energy would be transferred to the bullet. Might be wrong here but I think the same energy would be imparted to the bullet, but there would be slightly more felt recoil. Newton's third law and all that... Quote Link to comment Share on other sites More sharing options...
Scully Posted May 30, 2014 Report Share Posted May 30, 2014 Semi auto/pump? Benelli make a shotgun of this type, as did Franchi. Quote Link to comment Share on other sites More sharing options...
spandit Posted May 31, 2014 Author Report Share Posted May 31, 2014 Not sure if more energy would be transferred to the bullet. Might be wrong here but I think the same energy would be imparted to the bullet, but there would be slightly more felt recoil. Newton's third law and all that... Probably would be more recoil but the increased inertia of the whole rifle/me combo compared to the sliding bolt should mean more muzzle velocity. Difficult to test without a chronograph, I suppose. Quote Link to comment Share on other sites More sharing options...
pond digger 007 Posted June 2, 2014 Report Share Posted June 2, 2014 Probably would be more recoil but the increased inertia of the whole rifle/me combo compared to the sliding bolt should mean more muzzle velocity. Difficult to test without a chronograph, I suppose. Quote Link to comment Share on other sites More sharing options...
pond digger 007 Posted June 2, 2014 Report Share Posted June 2, 2014 I spoke to a gunsmith some years ago, who, to prove his point that bolt is more accurate than semi, jammed the bolt on a semi to test. According to him, the point was proved. Quote Link to comment Share on other sites More sharing options...
dk6052 Posted June 2, 2014 Report Share Posted June 2, 2014 My Weatherby MkXXII is a selectable bolt action and semi auto, Walther and Voere also made 1. Quote Link to comment Share on other sites More sharing options...
Sx3 clay breaker Posted June 2, 2014 Report Share Posted June 2, 2014 Krico made one with with both semi auto which you could lock the bolt to bolt action Quote Link to comment Share on other sites More sharing options...
spandit Posted June 3, 2014 Author Report Share Posted June 3, 2014 Thought I'd see if I could try mine with a locked bolt today. Trying to hold the bolt closed with gloves was both impractical & not very effective, so decides to get stuck in to some metalwork. The bolt handle on my rifle just pulls out without having to take it apart so I made up a pin to sit in its place: The original is on the right. The piece on the left was made to hook over the injection port. A couple of test firings showed that although the effect on sound was noticeable, the piece bent after about three rounds and didn't hold the bolt closed so effectively. On to Mark II: The upper piece slots over the pin & sits in the rifle like this: It took a while to make as its to a pretty high precision (mainly hand filed). My rifle never had the ejection port deflector which would have gotten in the way had it been there. Back out to the range where I'm happy to report the report was much quieter. Not sure about accuracy but with the piece removed, the rifle operates in semi-automatic mode as normal. In fact, it's easier to cock than before with the new pin! I tried making a sound recording but my iPhone cuts out without the piece installed so you can't actually hear it on S/A. I'll have another go in due course with a better mic. Not a perfect solution but it means I can easily return the rifle to original condition as I haven't damaged any parts. A short walk around the paddock (got to within 15 feet of some rabbits, at 4:30pm - only saw them when they ran off!) proved it didn't fall out of the action Quote Link to comment Share on other sites More sharing options...
Dekers Posted June 4, 2014 Report Share Posted June 4, 2014 Help me out here, what is the process for ejecting/loading with that length of metal holding the bolt closed, do you have to remove it for each operation? Quote Link to comment Share on other sites More sharing options...
welshwarrior Posted June 4, 2014 Report Share Posted June 4, 2014 Help me out here, what is the process for ejecting/loading with that length of metal holding the bolt closed, do you have to remove it for each operation? +1 I've been looking at it I can see how you now cycle the bolt. Quote Link to comment Share on other sites More sharing options...
spandit Posted June 4, 2014 Author Report Share Posted June 4, 2014 Help me out here, what is the process for ejecting/loading with that length of metal holding the bolt closed, do you have to remove it for each operation? You can pull it clear of the slot and it will hang on the bolt handle (or you can just take it right off). As I said, not a perfect arrangement but it does work. Will be interested to see how much cleaner it makes the action as it tends to get covered in stuff pretty quickly (especially with the ammo I'm using, which is really greasy) Quote Link to comment Share on other sites More sharing options...
spandit Posted June 4, 2014 Author Report Share Posted June 4, 2014 The hole goes all the way through the bolt so some sort of catch on the other side could conceivably make for a neater solution, but it would mean machining the action Quote Link to comment Share on other sites More sharing options...
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